Superconductivity, superfluidity and quantum geometry in twisted multilayer systems

Päivi Törmä*, Sebastiano Peotta, Bogdan A. Bernevig

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliReview Articlevertaisarvioitu

74 Sitaatiot (Scopus)
165 Lataukset (Pure)

Abstrakti

Superconductivity has been observed in moiré systems such as twisted bilayer graphene, which host flat, dispersionless electronic bands. In parallel, theory work has discovered that superconductivity and superfluidity of flat-band systems can be made possible by the quantum geometry and topology of the band structure. These recent key developments are merging into a flourishing research topic: understanding the possible connection and ramifications of quantum geometry on the induced superconductivity and superfluidity in moiré multilayer and other flat-band systems. This article presents an introduction to how quantum geometry governs superconductivity and superfluidity in platforms including, and beyond, graphene. Ultracold gases are introduced as a complementary platform for quantum geometric effects and a comparison is made to moiré materials. An outlook sketches the prospects of twisted multilayer systems in providing the route to room-temperature superconductivity.

AlkuperäiskieliEnglanti
Sivut528-542
Sivumäärä15
JulkaisuNature Reviews Physics
Vuosikerta4
Numero8
Varhainen verkossa julkaisun päivämäärä10 kesäk. 2022
DOI - pysyväislinkit
TilaJulkaistu - elok. 2022
OKM-julkaisutyyppiA2 Katsausartikkeli tieteellisessä aikakauslehdessä

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